package com.itheima.jicheng;

public class Test {

    public static void main(String[] args) {
        Fu fu = new Fu();
        System.out.println(fu.a);
        fu.a=100;
        System.out.println(fu.a);
        Zi zi = new Zi();
        System.out.println(zi.a);
        zi.a=200;
        System.out.println(zi.a);
    }
}
